Improvement in water-closet valves



J. MUIRHEAD.

WATER-CLOSET VALVES.

Patented July 17, 1877.

INVENTOR v ATTORNEY fix W/ITIJNESSES W 6 9 N PETERS,PfloTo-Lm-IQGRAPHER. WAsHiNGTbN, D C.

UNITED SATES PATENT. QFFICE. v

JAMES MUIRHEAD, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN WATER-CLOSET VALVES.

Specification forming part of Letters Patent N 0. 193,27 1, dated July17, 1877} application filed March 7, 1877.

To all whom it may concern:

Be it known that I, JAMES MUIRHEAD, of the city and county ofProvidence, and State of Rhode Island, have invented certainImprovements in Valves for Water-Closets, fully set forth and describedin theiollowing specification and drawing accompanying the same.

The object of this invention is to make a valve for water-closets bywhich itshall be easier to regulate the supply of water; and it consistsin putting a screw-plug over the spring that presses down thevalve-plunger, whereby the pressure on the valve may be increased ordiminished, as may be required; also, in putting the valve-stem throughthe valve with a screw-thread, so that by screwing it down the lowerportion of the stem will be lengthened, and the valve raised higher byits lever.

Figure 1 shows an elevation of the valve with part shown in section.Fig. 2 is a horizontal section taken through the dotted line av :10,Fig. 1.

A is the body of the valve, to be attached to the chamber of thewater-closet by the screw d. (J is the supply-pipe; D, the pipe connectswith the basin. a is the valveanger, the lower end of which forms thevalve proper, resting on the seat e. G is the cap, which is made with achamber to receive the plunger a. g is-a spring. placed inside of 5.116plunger a, and resting on the bottom of its chamber. h is a screw-plug,fitted into a of the cap G, and having its lower end snng on spring g. ris a flat ring fitted to the plunger a, and resting on the bottom of therecess made for the cap-screw, so that a suitable packing, 0, placedbetween the ring 1' and the cap, shall serve to pack both the en tranceof the plunger into its chamber, and the screw-joint of the cap with thebody of the valve. N. is the valve-stem, made with a screw-thread on itwhere it passes through the valve proper, which is also furnished with ascrew-thread in which the stem works, so that by turning the stem by themilled head on its upper end it can be screwed down the sides of thechamber, (see Fig. 2,) which' fit into notches in the outer edge of thevalve.

The lower portion of the stem N is made hollow. Two openings, 88, aremade into it in that part in the plunger, so. that any water that may beforced by the screw into the spring-chamber will run down through thestem into the closet-chamber when the valve is sh nt.

In operation it is often necessary, 011 account of more or less frictionin the packing, and greater or lesser pressure on the waterin thesupply-pipe, to increase or diminish the pressure of the spring 9 on thevalve, to make it close sooner or later. This is done by screwing theplug it down or up by its milled head, as the case may require, tocompress or release the spring g, and by turning the valvestem N by itsmilled head the height to which the lever will lift, the valve may beincreased or lessened. Both of these milled heads are accessible withoutopening any part of the valve or other parts of the closet-chamber.

\Vhat I claim as my invention, and desir to secure by Letters Patent, is

l. The combination of the valve-plunger a, spring g, screw-plug h, withthe cap G, and

valve-body A, when constructed and operat-' ing substantially as and forthe purpose set forth.

2. The valve a and stem N, the latter made to screw through. the valve,and extend out through the cap, for the purpose of adjustment, incombination with the cap G and valve-body A, substantially as described,and

for the purpose specified.

JAMES MUIRHEAD.

Witnesses:

J OHN O. Pumas, GILMAN E. J QPP.

